Comparative Analysis on the Performance of Column

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056

Volume: 08 Issue: 04 | Apr 2021 www.irjet.net p-ISSN: 2395-0072

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Comparative Analysis on the Performance of Column Supported

Elevated Storage Reservoir (ESR) Having Different Material Properties

Jay D Bhagat1, Aakash Suthar2

1P. G. Student, Department of Civil Engineering, L.J.I.E.T., Gujarat Technological University 2Assitant Professor, Department of Civil Engineering, L.J.I.E.T., Gujarat Technological University

---------------------------------------------------------------------***---------------------------------------------------------------------Abstract - Elevated Storage Reservoir (ESR) is a tall

structure which stores the water in huge amount. Hence,

proper designing and analysis must be carried out prior to

the construction. Same way, columns are the main part of

any structure. Basically, they transfer the load from super

structure to foundation. That makes the selection of the

column type very crucial. RCC Column, Steel Column are

used in Construction of Residential Building, Malls, Theatres

as well as in Industrial area. Generally, concrete filled steel

tube (CFST) columns are used in the design og high-rise

buildings, bridges, irregular shapes of building etc. CFST

column is a composite section formed by filling concrete into

a hollow steel tube. It resists the applied load through the

composite action of concrete and steel. Whereas the special

structure like water storage reservoir or ESR uses the RCC

column.

I would like to replace the traditional way of construction

using RCC column with CFST column. Hence, I would like

to carry out a comparative study on the design and the

analysis of ESR construction using RCC column and CFST

column. The Comparison can be between their behaviors,

moments, loading conditions or construction point of view.

To achieve this result, I will make 54 models using necessary

software like ETABS with respect to different locations,

different staging height and different earthquake zone,

keeping in mind the Indian Standard Code (ISC).

Key Words: Elevated Storage Reservoir, RCC Column & CFST Column, ETABS, Response spectrum analysis, Seismic response parameters, Seismic Zone-II,III,IV

1. INTRODUCTION Now a day, in India to fulfill the need of high-rise building concrete filled steel tube (CFST) is best suited for infrastructural growth rather than RCC and STEEL. CFST structural system can be defined as the structures in which composite section made up of two different types of material such as steel and concrete are used for beams, and columns. Their usage as column in high-rise and multi-story buildings, as beams in low-rise industrial buildings has become

widespread in countries like China and many other countries in last few decades but their usage in India is a new concept. Now a days, in India to fulfill the need of high-rise building concrete filled steel tube (CFST) is best suited for infrastructural growth rather than RCC and STEEL. CFST structural system can be defined as the structures in which composite section made up of two different types of material such as steel and concrete are used for beams, and columns. Their usage as column in high-rise and multi-story buildings, as beams in low-rise industrial buildings has become widespread in countries like China and many other countries in last few decades but their usage in India is a new concept.

Fig -1: Types of CFST Column

2. LITERATURE REVIEW Sangeetha P., Ashwin Muthuraman RM. , Dachina G. Dhivya M.,Janani S. and Sai Madumathi [2018] [1]: Concrete filled steel tubular columns are preferred due to their excellent static and dynamic resistant properties such as a high strength, high ductility and large energy absorption capacity. The ultimate strength of CFST, RCC and HST were compared and CFST having the advantages of both concrete and steel is found to behave better and average bond strength ranges between 0.7 to 1.1N/mm2. The failure mode of the column specimens was studied and it was found that HST were buckled inward, RCC columns were failed by crushing and CFST columns were by outward buckling. The Load carrying Capacity is 2.5 times Greater than Normal Reinforced Concrete Column.




K L Kulkarni, L.G. Kalukar [2016] [2]: This Paper present the comparative equivalent static and time history analysis of elevated encased composite column material water tank is during earthquake. The RCC column staging of elevated water tank can be replace by a encased composite column staging water tank, because the RCC water tank developed the cracks during earthquake, result in loss of their if strength and stiffness, so increase performance Of elevated water tank during earthquake to study the behavior of composite elevated water tank. Staging height of all water tank is 30m , 40m , 50m, And capacity of tank is 250cum.In Equivalent static analysis only time period Increase about 6% to 23%, Storey Stiffness decrease about 27% to 66%, Storey drift decrease about 25% to 66%, Base shear decrease about 41% to 54% and Storey displacement decreases about 10% to 30% for 30m, 40m, 50m. Ms. Pranjali N. Dhange, Mr. Mandar M Joshi [2017] [3]: To study about the different methods of analysis and design of water tanks. To make a study about the guidelines for the dynamic analysis and design of liquid retaining structure according IS code. Check the computer software applicability and suitability for the dynamic analysis of RCC liquid storage tanks. Analysis the water tank of 50m3 capacity by using Response spectrum method, Displacement coefficient method and computational analysis. Consider two cases for same capacity of tank, change in geometry features of a container can show the considerable change in the response of elevated water tank. From above mentioned details study and analysis some of the conclusions can be made as follow for same capacity, same geometry, Same height, with same staging system, in the same Zone, With same importance factor & response reduction factor, response by equivalent static method to dynamic method differ considerably.

Aqsa S. Faras, V.G.Khurd [2018] [4]: Focuses mainly on the response of elevated circular tank under seismic loading. The analysis is carried out for four cases viz. 100%, 75%, 50%, 25% fill condition. Sloshing effect along with hydrostics effct is considered during analysis. A parametric study for max displacement and base shear is conducted. Finit element modeling of tank was carried out using software staad pro and seismic analysis was carried out Peak displacement, base shear obtained from analysis were compared. In this study 70m3 capacity tank is considered for analysis. Displacement decreases with decreases in water level. It is max for full fill condition and simultaneously goes on decreasing to quarterly fill condition. Base shear value increases for increasing water level in tank. Jalaja MS, Nanjunda K N,Shylaja N, Avinash S Deshpande [2019] [5]: In this paper multi story RCC structure is selected as a study frame and then replaced it by concrete filled steel tube column. The modeling and analysis is carried out using time history method. Seismic parameters like Displacement, Storey Drift, Storey Shear, Storey Stiffness, Overturning moment and Base shear are compared for Zone-

II and IV. Comparing Parameters like Storey Drift, Storey Displacement, Storey Shear, Stiffness. The result of composite Building is almost 5-6% less compare to RCC building in zone-II and 10-20% less in Zone-IV. This paper presents the seismic analysis for G+19 story structure for both RCC and CFST column using Etabs Software. Composite buildings have lesser displacement than RCC buildings even through they have lesser column areas. Composite buildings have lesser storey drift than RCC buildings despite having lesser column areas, but are well within the codel limits. Composite buildings have lesser storey shear values than RCC building even though they have lesser column areas.The reduction in column area composite buildings with concrete filled steel tube columns can be economical. Composite structure can be used in higher seismic zone and give better results than conventional RCC structure. Spruha Wanjari, Sunil M. Rangari [2019] [6]: In this research paper evaluate the seismic response of elevated water tank with varying h/D ratio and seismic zone. To study the seismic performance of circular and intz elevated water tank with varying h/D ratio and seismic zone. Also study the sloshing effect and wind effect on water tank. In this research paper to analysis the displacement of the structure, study the base shear , axial force and moments of structure along different direction by seismic analysis and wind load analysis. The analysis is carried out by using FEM software and also use IS code 1893:2016 for seismic analysis and IS code 875:2015-part-3 for Wind analysis. Consider capacity of SMRF Elevated water tank is 5,00,000 liter and staging height is 20 m considering 4 m height of each panel are considered for study. Analysis carried out in all four seismic zone and consider the shape of the column is circular and H/D ration is 0.4, 0.5, 0.6. For tank full and empty conditions, as h/D ratios increases; Base shear with Base moment increases and Roof Displacement increases. For tank full and tank empty condition, joint displacement is higher as H/D ratio increases for intz tank than circular tank. For tank full and tank empty conditions, Base moment is higher as H/D ration increases for intz tank than circular tank.

3. RESEARCH GAP From the literature review, lot of research has been done for different type of structure systems in terms of size and shapes. Also, for the irregular shape of buildings. It is common to see the usage of RCC column and CFST column for the construction of High-Rise buildings, Bridges, Irregular shape of building etc. But the usages of same technique like CFST columns for elevated storage reservoir or water storage reservoir are yet not quite visible. Neither enough clarification nor research is available which provide the limitation of not using CFST column instead of RCC column for such constructions. Neither Comparison the values between different seismic parameters like Displacement, Joint Reaction, Stiffness, Story Drift by using




RCC column and CFST column for Elevated Storage Reservoir.

4. OBJECTIVE The objective of this work is as follows: 1. To do comparative study of CFST column and RCC

column for Elevated Storage Reservoir. To study its effectiveness in different seismic zone and for different height.

2. To understand the Comparison of Story drift in RCC and CFST column system. Also considered the Displacement, Joint reaction and Stiffness and story drift of the structural system.

3. Understand Behavior of Reinforced concrete column and Concrete filled tube structural system by using necessary software like ETABS.

4. To carry out Linear Dynamic Analysis method such as Response Spectrum Analysis method for both RCC and CFST Column Elevated Storage Reservoir models using software ETABS.

5. To study the behavior of RCC and CFST column Supported Elevated Storage Reservoir height of 30m, 35m, 40m in Seismic zone II, III, IV.

6. To perform a comparative study of the various seismic parameters such as Maximum Story Displacement, Story Drift, Story Stiffness of RCC and CFST Column Supported System of 30m, 35m, 40m height.

5. METHODOLOGY Two type of column supported system is taken in this project such as RCC column and CFST column. Also consider the different size of columns in different zone and analysis the seismic parameter results with respect to different height and size of column. Total 54 model are considered in this project such 18 models are prepared in zone-II with different column size and height, 18 models are prepared in zone-III with different Column Size and height and 18 models are prepared in Zone-IV with different column size and height . Linear Static Dynamic Analysis such as Response Spectrum Analysis has been carried out for seismic zone II, III, IV specified in IS 1893 (Part I): 2016 to understand the performance characteristics of the Elevated storage reservoir in comparison with regular RCC column and CFST column using software ETABS .

6. MODEL DATA

Table -1: Model data

Geometric Parameters Height of ESR 30m,35m,40m Staging Height 3.1m, 3.8m,4.5m

Number of Floors 7 Height of Basement 3.5m

Total dimension of plan in X- 18.4m

direction

Total dimension of plan in Y-direction

18.4m

Cylindrical tank Height 5 m Dimension of Members

RCC Column Size RCC Column Size RCC column Size

600mm x 600mm 650mm x 650mm 700mm x 700mm

CFST column size CFST column size CFST column size

450mm x 450mm 500mm x 500mm 550mm x 550mm

Beam Size 300mm x 900mm Slab Thickness 125mm

Thickness of Wall 115mm

Material Properties

Grade of Concrete for RCC column M30

Grade of Steel for RCC column Fe 500

Grade of Concrete for CFST column M20

Grade of Steel for CFST column FE 345

Tank Capacity 14 LL

Loads Taken

Unit weight of RCC 25 kn/m3 Floor Finish Load 5 kn/m2

Live Load 39.025 kn/m2 Wall Load 2.875 kn/m2

Seismic Parameters

Seismic Zone Factor 0.10 (II) 0.16(III) 0.24(IV)

Response Reduction Factor 5 Importance Factor 1.5

Type of Soil Medium (II) Support Condition Fixed

Frame Type SMRF

Wind Speed 33 m/s (II) 39 m/s (III) 44 m/s(IV)

Table -2: 3D view of structure models

Zone Height RCC Column CFST Column

II

30M

35M




7. RESULT Maximum value of storey displacement, storey stiffness, storey drift and joint reaction are taken from the software. The comparison of RCC column and CFST column parameters mentioned above presented in table below.

Table-3: Seismic parameter comparison results of Zone-II for 30meter height of Elevated Storage Reservoir



Zone Height RCC Column CFST Column

II 40M

III

30M

35M

40M

IV

30M

35M

40M




Table-6: Seismic parameter comparison results of Zone-III for 30meter height of Elevated Storage Reservoir

Table-7: Seismic parameter comparison results of Zone-III for 35meter height of Elevated Storage Reservoir

Table-8: Seismic parameter comparison results of Zone-

III for 40meter height of Elevated Storage Reservoir

Table-9: Seismic parameter comparison results of Zone-IV for 30meter height of Elevated Storage Reservoir






8. CONCLUSIONS 1. In zone-II the values of the Story Displacement, Story

Drift and Joint Reaction are less in CFST column structural system compare to the RCC column structural system when the value of the stiffness is more in CFST column structural system compare to RCC column structural system.

2. CFST structural system is stables and effective compare to the RCC structural system in Seismic zone-II.

3. With increases the size of RCC column and CFST column the values of all parameters are increases. Increase of the size of CFST column it gives the more strength and Stiffness to the structure.

4. In zone-III, the values of Story displacement, story drift are very less for CFST column Structural system as compare to the RCC column structural system.

5. In zone-III, the values of the Story Stiffness and Joint Reaction are more for CFST column Structural system as compare to the RCC column structural system.

6. From the results of the different parameters we can say that the CFST column is more suitable in zone III as compare to the other zone.

7. In zone-IV, the values of the story displacement, story drift and Joint reaction is high as compare to the Zone-II and Zone-III.

8. In zone-IV, the values of the story displacement, story drift and joint reaction is almost same for the RCC column structural system and CFST column structural system.

9. From all the results we can say that the CFST column structural support system is safer and more stable and reliable as compare to the RCC structural support system in Zone-III and less safe and stable in Zone-IV.

REFERENCES [1] Sangeetha P., Ashwin Muthuraman RM. , Dachina G. ,

Dhivya M., Janani S. and Sai Madumathi (2018) “Behavior of Concrete Filled Steel Tubes”, Journal of Informatics and mathematical Sciences, ISSN 0975-5748(online); 0974-875X, Vol. 10, Nos. 1 & 2, pp.297-304

[2] K L Kulkarni, L.G. Kalukar (2016) “Comparison Between RCC & Encased Composite column Elevated Water Tank” ,IOSR Journal of Mechanical & Civil Engineering(IOSR-JMCE), e-ISSN: 2278-1684,p-ISSN: 2320-334X, Volume 13, Issue 5 Ver. VIII(Sep-Oct. 2016), PP 57-64

[3] Ms. Pranjali N. Dhange, Mr. Mandar M Joshi (2017) “Review Study on Dynamic Analysis of RCC Elevated Water Tank”, Journal of Emerging Technologies and Innovative Research(JETIR), ISSN-2349-5162,Volume 4, Issue 04 (April 2017)

[4] Aqsa S. Faras, V.G.Khurd (2018)“ Seismic Behavior of RCC Circular Elevated Water Tank”, International Journal for Research in applied science & Engineering

Technology(IJRASET),ISSN: 2321-9653; Volume: 06, Issue VI(June 2018)

[5] Jalaja MS, Nanjunda K N,Shylaja N, Avinash S Deshpande (2019) “Comparative Study on seismic Behavior of Multi Storied Building with Composite and Conventional Columns” , S-JPSET, ISSN: 2229-7111, ISSN: 2454-5767 Vol. 10

[6] Spruha Wanjari, Sunil M. Rangari (2019) “Continuity Analysis of Elevated Storage Reservoir”, International Journal of Engineering Development and Research, ISSN: 2231-9939, Volume 7, Issue 3

[7] Tejaswi Koramutla, Anusha Saptla (2018) “Design of Elevated level Storage Reservoir” International Journal of Engineering Research & Technology, e-ISSN: 2278-0181, Volume: 08, Issue: 05 (May-2019)

[8] IS-456 (2000), Indian standard of code and practice for plain and reinforced concrete for general building construction, Bureau of Indian Standards, New Delhi.

[9] IS-1893(2016), Criteria for Earthquake Resistant Design of Structures, [Part1: General Provisions and Buildings, Bureau of Indian Standard].

[10] IS-875(Part 3)1987, Indian Standard code of practice for design loads (other than earthquake)for building and structure, Bureau of Indian Standards, New Delhi.

[11] IS: 11682-1985 “Criteria for design of RCC staging for over head water tanks”, Bureau of Indian Standards, New Delhi

[12] IS: 3370 – 1965 “Code of practice for concrete structure for storage of liquids parts 1, part 2, part 4”, BIS. New Delhi.

[13] AISC-360, “American standards code for steel structures”, American steel institute, Farmington Hills, Mich., 2005,430 pp.

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Comparative Analysis on the Performance of Column